background image

OUTDOOR UNIT

 Please mount the Outdoor unit on stable ground to prevent vibration 

and increase of noise level.

 Decide the location for piping after sorting out the different types of 

pipe available.

 When removing side cover, please pull the handle after undoing the 

hook by pulling it downward.

Removal Of Air From The Pipe And Gas Leakage Inspection

Gas Leakage Inspection

Please use gas leakage detector to check if leakage 
occurs at the connection of Flare nut as shown on 
the right.

If gas leakage occurs, further tighten the connection 
to stop leakage. (Use the detector provided for 
R410A)

FINAL

 ST

AGE OF INST

ALLA

TION

Insulation And Maintenance Of Pipe Connection

1

 The connected terminals should be completely sealed with 

heat insulator and then tied up with rubber strap.

 Please tie the pipe and power line together with vinyl tape 

as shown in the 

fi

 gure showing the installation of Indoor and 

Outdoor units. Then 

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 x their position with holders.

 To enchance the heat insulation and to prevent water 

condensation, please cover the outdoor part of the drain hose 
and pipe with insulation pipe.

 Completely seal any gap with putty.

  Installation Of Remote Controller

2

  Power Source And Operation Test

3

 The remote controller can be placed in its holder which is 

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 xed on wall or beam.

 To operate the remote controller at its holder, please ensure 

that the unit can receive signal transmitted from the controller 
at the place where the holder is to be 

fi

 xed. The unit will beep 

when signal is received from the remote controller. The signal 
transmission is weaken by the 

fl

 uorescent  light.  Therefore, 

during the installation of the remote control holder, please 
switch on the light, even during day time, to determine the 
mounting location of the holder.

Power Source

CAUTION

!

 Please use a new socket. Accident may occur due to the use 

of old socket because of poor contact.

 Please plug in and then remove the plug for 2 – 3 times. This 

is to ensure that the plug is completely plugged into the socket.

 Keep additional length for the power cord and do not render 

the plug under external force as this may cause poor contact.

 Do not 

fi

 x the power cord with U-shape nail.

Operation Test

  Please ensure that the air conditioner is in normal operating 

condition during the operation test.

 Explain to your customer the proper operation procedures 

as described in the user’s manual.

<

IA1122: A 

>

The controller must 
be hooked onto the 
hook at the lower 
part of the holder. 
Push in the remote 
controller in the 
direction as shown 
in 

fi

 gure  beside.

3

Procedures of using Vacuum Pump for Air Removal

As shown in right 

fi

 gure, remove the cap 

of valve core. Then, connect the charge 
hose. Remove the cap of valve head. 
Connect the vacuum pump adapter to the 
vacuum pump and connect the charge 
hose to the adapter.

Fully tighten the “Hi” shuttle of the 
manifold valve and completely unscrew 
the “Lo” shuttle. Run the vacuum pump 
for about 10–15 minutes, then completely 
tighten the “Lo” shuttle and switch off the 
vacuum pump.

2

Completely unscrew the spindle of 
the service valve (at 2 places) in anti-
clockwise direction to allow the 

fl

 ow  of 

coolant (using Hexagonal Wrench key).

3

Remove the charge hose and tighten 
the cap of valve head. Check the cap’s 
periphery if there is any gas leakage. 
The task is then completed.

4

1

   Preparation of Pipe

1

 Use a pipe cutter to cut the copper pipe.

 Jagged edge will cause leakage.

 Point the side to be trimmed downwards during trimming to prevent copper 

chips from entering the pipe.

 Before 

fl

 aring, please put on the 

fl

 are  nut.

   Pipe Connection

2

INST

ALLA

TION OF REFRIGERA

TING PIPES 

AND 

AIR REMOV

AL

CAUTION

!

Outer
Diameter (mm)

6.35

9.52

12.7 

For R410A tool

0.0 

~

 0.5mm

0.0 

~

 0.5mm

0.0 

~

 0.5mm

For R22 tool

A (mm)

AIR REMOV

AL

WARNING

  The naked part of the wire core should be 10 mm and 

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 x it to the terminal tightly. Then try to pull the individual 

wire to check if the contact is tight. Improper insertion 
may burn the terminal.

 Be sure to use only power cables approved from the 

authorities in your country. For example in Germany: 
Cable type: NYM 3x1.5mm

2

 (Fuse = 16A time delay).

  Please refer to the installation manual for wire connection 

to the terminals of the units. The cabling must meet the 
standards of electrical installation.

 There is a AC voltage of 220-230V between the L and N 

terminals. Therefore, before servicing, be sure to remove 
the plug from the AC outlet or switch off the main switch.

Checking for the electric source 
and the voltage range

 Before installation, the power source must be checked and 

necessary wiring work must be completed. To make the wiring 
capacity proper, use the wire gauges list below for the lead-in 
from a pole transformer and for the wiring from a switch board 
of fuse box to the outlet in consideration of the locked rotor 
current.

  Investigate the power supply capacity and other electrical 

conditions at the installation location.

  Depending on the model of room air conditioner to be 

installed, request the customer to make arrangements 
for the necessary electrical work etc.

  The electrical work includes the wiring work up the 

outlet. In localities where electrical conditions are poor, 
use of a voltage regulation is recommended.

 Install outlet for the room air conditioner within the 

reaching range of the line cord.

IMPORTANT

Cable length

up to 

1

6m

up to 15m

up to 25m

Wire cross-section

1.5mm

2

2.5mm

2

4.0mm

2

IMPORTANT

 THIS APPLIANCE MUST 

BE EARTHED.

Procedures of Wiring

!

WARNING

!

CONNECTION OF POWER CORD

WARNING

!

Please face this side (suction 
side) of the unit to the wall.

Please remove side cover 
when connecting the piping 
and connecting cord.

Pull downward

 Recommend to use 

R410A 

fl

 aring  tool.

CAUTION

!

In case of removing 

fl

 are nut of an Indoor unit, 

fi

 rst remove a nut 

of small diameter side, or a seal cap of big diameter side will 

fl

 y 

out. Prevent water from entering into the piping when working.

When the meter reaches - 101KPa 
(-76cmHg) during pumping, fully 
tighten the shuttle.

Meter showing pressure

When pumping starts, slightly loosen the 

fl

 are nut to check of air sucked in. Then 

tighten the 

fl

 are  nut.

Earth terminal

N

L

C D

CONDENSED WATER DISPOSAL OF OUTDOOR UNIT

  There are holes on the base of Outdoor unit for condensed 

water to exhaust.

  In order to 

fl

 ow condensed water to the drain, the unit is installed on a 

stand or a block so that the unit is 100mm above the ground as shown 

fi

 gure. Join the drain pipe to one hole.

 At 

fi

 rst insert one portion of the hook to the base (Portion A), then pull the 

drain pipe in the direction shown by the arrow while inserting the hook 
into the base. After installation, check whether the drain pipe cling to the 
base 

fi

 rmly.

 

When Using and Installing In Cold Areas

  When the air conditioner is used in low temperature and in snowy 

conditions, water from the heat exchanger may freeze on the base surface 
to cause poor drainage. When using the air conditioner in such areas, do 
not install the bushings. Keep a minimum of 250mm between the drain 
hole and the ground. When using the drain pipe, consult your sales agent.

 

   For more details, refer to the installation Manual for Cold Areas.

A

1.0mm

1.0mm

1.0mm

Lo

Hi

Wiring Of The Indoor Unit

  For wire connection of the Indoor unit, you need to remove 

front panel and electrical cover.

Method to remove front panel

  Refer to “FINAL STAGE OF INSTALLATION – How to Remove 

The Front Cover”.

Outer

dia.of pipe

6.35 (1/4")

9.52 (3/8")

12.7 (1/2")

6.35 (1/4")

9.52 (3/8")

12.7 (1/2")

Valve 

head cap

Torque N·m

(kgf 

·

 cm)

13.7 – 18.6 (140 – 190)

34.3 – 44.1 (350 – 450)

44.1 – 53.9 (450 – 550)

19.6 – 24.5 (200 ~ 250)

19.6 – 24.5 (200 ~ 250)

29.4 – 34.3 (300 – 350)

12.3 – 15.7 (125 ~ 160)

Small dia. side

Large dia. side

Valve core cap

Small dia. side

Large dia. side

Power supply shall be connected at the rated voltage, otherwise 
the unit will be broken or could not reach the speci

fi

 ed capacity.

Outdoor Unit

GRN + YEL

Strip wires

Power line

Control line

GRN + YEL

Strip wires

Indoor Unit

Detail of cutting the 
connecting cord

When removing the 
connecting wires for 
the Indoor unit, please 
remove the low cover 
panel in front of the 
unit.

 If you cannot attach the side plate due 

to the connecting cord, please press the 
connecting cord in direction to the front 
panel to 

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 x  it.

  Be sure that the hooks of the side plate is 

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 xed in certainly. Otherwise water leakage 

may occur and this causes short circuit or 
faults.

 The connecting cord should not touch to 

service valve and pipes. (It becomes high 
temperature in heating operation.)

Wiring of The Outdoor Unit

 Please remove the side plate for wire connection.

Fuse Capacity

16A time delay fuse

How to Remove The Front Cover

 1  Remove the front panel.

 

Please remove and attach the front panel by both hands.

 

After opening the front panel by both hands.

  Undo the right arm while pushing it inside.

  Slide the front panel to right as shown in 

fi

 gure.  Then 

remove while pulling it to front.

 2  Remove the 

fi

 lters.

 3  After removing two screws, pull the center of the front 

cover towards you and release the claws.

 4  Pull the side faces (lower sections) of the front cover 

towards you as shown in the 

fi

 gure and remove the 

            

cover.

 

How to Attach the Front Cover

Check that the drain pan is securely attached.

2  After installing the front cover onto the unit, hook three 

claws at upper side of the cover securely. Then, push 
the center of the front cover to lock the claws.

Tighten the two screws.

4 Install 

the 

fi

 lter.

Slide the shafts of the right and left arms on the washable 
panel along the steps to insert the shafts into the holes 
till they stop. After checking that the shafts are securely 
inserted, close the panel.

Method to remove the low cover

 Pull the cover at  1  and  2   

in the directions as shown by 
arrows to remove the cover.

After remove the screw 
and cover, and put the 
connecting cords and 

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 x 

the cover with screw.

DRAIN PIPE

[For all optional part, please refer catalog for part number]

As for connecting to H-Link, a separately purchased 
RAC Adapter is required.

  To install the wiring the electrical box cover must be opened.

 Connect the connector of RAC adapter to CN7.

 Assemble back the cover of electrical box.

 Please refer to the respective user manual of RAC Adapter 

for further details.

 Please be careful not to damage lead wires by edge of 

plate when connecting the optional parts.

[For all optional part, please refer catalog for part number]

Connection to the electrical box:

 Remove the cover of electrical box.

 Connect the connector of Weekly Timer/wired remote 

controller to CN9.

 Assemble back the cover of electrical box.

  Please refer to the respective user manual of Weekly Timer/

wired remote controller for further details.

 Please be careful not to damage lead wires by edge of 

plate when connecting the optional parts.

WEEKLY TIMER / WIRED REMOTE CONTROLLER

H-LINK

How To Connect The Optional Parts

(RAC Adapter, Weekly Timer, Wired Remote Control)

CN7

RAC Adapter 
cord

CN9

Weekly timer cord/
Wired remote 
controller cord

Connect the
earth cord

Closed

R410A
Manifold valve

Valve

Charge hose

Valve

Vacuum pump
adapter

Vacuum 
pump

BASE

INS RAS-18MH1-EN2   1

INS RAS-18MH1-EN2   1

12/14/13   1:45 PM

12/14/13   1:45 PM

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